15 Union St, Nantucket, MA 02554 Property Records

Nantucket County and Nantucket Town property record for 15 Union St, Nantucket, MA 02554

Property Summary

Property Type	Single Family Home
Details	4 bd · 4.5 ba · 2,821 sqft · built 1800
Lot Size	0.081 acres (3,535 sqft)
Owner	Company Name on File
Last Sale	$2,875,000 (Jan 2021)
Tax Bill	$11,619 (2026)
Deeds & Mortgages	Oct 2022 Sale Jan 2021 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`NANT M:04232 P:00072`

Property Details

APN / Parcel Number

Primary APN	`NANT M:04232 P:00072`
Alternative APN	`9792`

Interior

Bedrooms	4 Beds
Full Baths	4.5 Baths
Half Baths	1 Half Bath
Stories	3 Stories
Building Area	2,821 sqft Living Area
Gross Area	5,050 sqft
1st Floor Area	1,231 sqft
Basement Area	1,155 sqft
Unfinished Basement	1,155 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1800
Effective Year Built	Effective 1800
Architectural Style	Historical
Exterior Material	Wood Siding
Roof Type	Gable
Roof Material	Asphalt
Lot Area	3,535 sqft (0.081 acres)
Deck Area	Deck Area

Utilities, Heating & Cooling

Heating System	Hot Water
Heating Fuel	Gas

Location & Zoning

Account Number	9792
Street Address	15 UNION ST
City	NANTUCKET
State	MA
Zip	02554-3844
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	ROH
Jurisdiction	NANTUCKET MA
Township / Civil Division	NANTUCKET
Census Block Group	2
Census Block	2061
Census Tract	950100

Historic Designation

Source: NPS National Register of Historic Places, as of August 1, 2026

Historic District	Within the Nantucket Historic District listed 1966 · National Historic Landmark (designated 1966) · NRIS 66000772

Federal listing alone does not restrict alterations; local historic district rules, which this data does not cover, may apply.

Owner

15 Union St is owned by a company that bought it in January 2021.

Source: Nantucket County and Nantucket Town records, as of October 20, 2026

Owner of Record	Company Name on File
Mailing Address	15 UNION ST, NANTUCKET, MA 02554-3844
Owner Type	Company
Vesting	Company

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Deeds, Mortgages & Sale History

Date	Document
Oct 13, 2022	Deed, Transfer
Jan 25, 2021	Quit Claim Deed, Transfer · Stand-Alone First Mortgage FIRST REPUBLIC BANK

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Jan 25, 2021 · Amount on File
Deed Sale	Jan 25, 2021 · Amount on File
Prior Sale	Jan 25, 2008 · Amount on File
Prior Transfer Date	Jan 21, 2021
Prior Transfer Doc	168233
Record Updated	Oct 29, 2026

October 2022: Deed, Transfer

Document Type	Deed
Jurisdiction	NANTUCKET MA
Recording Date	Oct 13, 2022
Property Address	15 UNION ST, NANTUCKET, MA 02554-3844
Document Number	0000175478
Instrument Date	Oct 12, 2022
Instrument	175478
Transaction Type	Transfer
Record Updated	Oct 28, 2022

Transaction

Tax	$0.00
Amount Accuracy	No Consideration Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	15 UNION ST, NANTUCKET, MA 02554-3844

January 2021: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	NANTUCKET MA
Recording Date	Jan 25, 2021
Property Address	15 UNION ST, NANTUCKET, MA 02554-3844
Document Number	168233
Instrument Date	Jan 21, 2021
Instrument	168233
Transaction Type	Transfer
Record Updated	Jun 1, 2021

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	8 WASHINGTON ST, NANTUCKET, MA 02554-3843

Mortgage

Document Number	168236
Date	Jan 25, 2021
Instrument	168236

Lender

Name	FIRST REPUBLIC BANK
Type	Bank

Agreement

Type	Stand-Alone First Mortgage
Amount	Amount on Record

Tax Assessment & Valuation

The 2026 property tax bill for 15 Union St was $11,619, up 0.5% from the year before.

Source: Nantucket County and Nantucket Town assessment roll, as of April 14, 2026

Property Jurisdictions

Type	Name
State	Massachusetts
County	Nantucket County
County Subdivision	Nantucket Town
Unified School District	Nantucket School District (PK - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2026	$11,619.00 (+0.5%)	$3,724,000 (+5.66%) Land $2,132,200 Building $1,591,800	$4,561,650
2025	$11,561.00 (+5.08%)	$3,524,600 (+0.28%) Land $1,845,200 Building $1,679,400
2024	$11,002.00 (+18.74%)	$3,514,900 (+21.77%) Land $1,879,300 Building $1,635,600
2023	$9,266.00	$2,886,500 Land $1,789,700 Building $1,096,800

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

Flood

FEMA maps place 15 Union St in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.

Source: FEMA National Flood Hazard Layer, effective February 7, 2025 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood Zone	Zone X minimal risk
Nearest Special Flood Hazard Area	Zone AE, within 500 ft
Flood Insurance Requirement	Not required lenders may require it
Flood Insurance Cost	Premium on File median of 319 individual policies
Nearby Flood Policies	357 units insured incl. 38 condo units
Nearby Flood Claims	380 (1978–2026)
Claims Outside the SFHA	20 of 380
Most Recent Claim	Feb 2026 · Severe Winter Storm And Snowstorm
Claims by Event	Severe Winter Storm, Snowstorm, And Flooding, Jan 2015 · 99 claims Winter Coastal Storm, Dec 1992 · 71 claims Coastal Storm, Oct 1991 · 118 claims

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.

Wildfire

The area around 15 Union St has no burnable land within ember reach, so its wildfire risk is not rated.

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	Not rated no burnable land within ember reach

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water System	WANNACOMET WATER COMPANY serves 27,703 people · EPA ID MA4197000
Water Source	Groundwater
Last State Inspection	May 2025
Lead	2 ppb (2023–2025) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	67 last 3 years

Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.

Internet Providers

Source: FCC Broadband Data Collection, based on 393 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 2,000
T-Mobile Fixed Wireless	100 / 20

May also be available: Verizon.

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